Here is a first try of the build

Grapeshot2 Sulfur Vents
2 Mountain
4 Great Furnace
4 Seat of the Synod
8 Island
4 Ashnod's Altar
4 Chromatic Sphere
4 Chromatic Star
4 Lotus Petal
4 Myr Retriever
3 Impulse
4 Brainstorm
4 Muddle the Mixture
1 Transmute Artifact
4 Grapeshot
4 Rite of Flame




Sideboard
4 Tremor
4 Red Elemental Blast
4 Annul
3 Blue Elemental Blast

For those who wonder, the five uncos are 4 Myr retriever and 1 Transmute artifact. Ashnod's altar was a common in Chronicles reprint.

As you can see, this is fully combo oriented. You have all you might need to draw (Brainstorm and Impulse), accelerate your mana (Rite of Flames, Lotus Petal, Sulfur Vents), do both at a time (Chromatic sphere and star), tutor anything (Muddle the mixture can fetch Transmute artifact that can fetch Ashnod's Altar). It's still need to be tested, tough, and as a theorical paperworks, some fixing might be needed - the manabase may be quite wrong.

Let me know what you think of it :)